Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet Initiative has ...

While killer whales (Orcinus orca) can trigger the immediate departure of white sharks (Carcharodon carcharias), extended absences from their aggregation sites are also part of the sharks' natural ...

Orcas, or killer whales, are deadly and beautiful apex predators.

Killer whales can scare white sharks away in the moment, but a 12-year study from South Australia shows that long disappearances from shark hotspots are often just part of the sharks’ natural rhythms.

Researchers have observed dolphins and killer whales hunting together for the first time as part of a new study released on Thursday, Dec. 11. The top predators joined forces to feast on salmon off ...

Killer whales have been caught on video breaking off pieces of seaweed to rub and groom each other, scientists announced Monday, in what they said is the first evidence of marine mammals making their ...

Grabbing a meal with a friend is way better than dining solo — and killer whales agree. The whales prefer to hunt for herring in pairs, researchers report July 3 in Current Biology. These cetaceans ...

Killer whales and dolphins have been working together to hunt salmon in the northern Pacific Ocean, an unexpected finding that further reveals the complex social lives of marine mammals. Video cameras ...

When researcher Jared Towers set up his cameras underwater to observe a pair of killer whales, he saw something strange.One of the orcas, a juvenile female, “approached a camera I had in the water to ...